package com.wc.AlgoOJ_homework.ALOJ模块测试Ⅱ.G_李白打酒加强版;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;

/**
 * @Author congge
 * @Date 2024/5/16 15:35
 * @description http://43.138.190.70:8888/p/518?tid=663e2cd8d39d10926ed3fa74
 */
public class Main {
    static FastReader sc = new FastReader();
    static PrintWriter out = new PrintWriter(System.out);
    static int N = 110, M = 110, K = 110, P = (int) 1e9 + 7;
    static int[][][] f = new int[N][M][K];
    static int n, m;

    public static void main(String[] args) {
        n = sc.nextInt();
        m = sc.nextInt();
        f[0][0][2] = 1;
        for (int i = 0; i <= n; i++) {
            for (int j = 0; j <= m; j++) {
                if (i == 0 && j == 0) continue;
                for (int k = 0; k <= m; k++) {
                    if (j > 0)
                        f[i][j][k] = (f[i][j][k] + f[i][j - 1][k + 1]) % P;
                    if (i > 0 && k > 0 && k % 2 == 0)
                        f[i][j][k] = (f[i][j][k] + f[i - 1][j][k / 2]) % P;
                }
            }
        }
        out.println(f[n][m][0]);
        out.flush();
    }
}

class FastReader {
    StringTokenizer st;
    BufferedReader br;

    FastReader() {
        br = new BufferedReader(new InputStreamReader(System.in));
    }

    String next() {
        while (st == null || !st.hasMoreElements()) {
            try {
                st = new StringTokenizer(br.readLine());
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return st.nextToken();
    }

    int nextInt() {
        return Integer.parseInt(next());
    }

    String nextLine() {
        String s = "";
        try {
            s = br.readLine();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return s;
    }

    long nextLong() {
        return Long.parseLong(next());
    }

    double nextDouble() {
        return Double.parseDouble(next());
    }

    // 是否由下一个
    boolean hasNext() {
        while (st == null || !st.hasMoreTokens()) {
            try {
                String line = br.readLine();
                if (line == null)
                    return false;
                st = new StringTokenizer(line);
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
        return true;
    }
}
